Measurement of cerebral blood flow by ultrasonic Doppler technique--cerebral hemodynamics during voluntary hyperventilation and the valsalva maneuver.
D000368:Aged; D001161:Arteriosclerosis / Q000503:physiopathology; D001249:Asthma / Q000503:physiopathology; D001784:Blood Gas Analysis; D001794:Blood Pressure; D002560:Cerebrovascular Circulation; D003327:Coronary Disease / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006985:Hyperventilation / Q000503:physiopathology*; D008297:Male; D008722:Methods; D008875:Middle Aged; D010101:Oxygen Consumption; D011674:Pulse; D014465:Ultrasonics; D014636:Valsalva Maneuver